Executive Assistant to CEO

About Cartesia
Our mission is to build the next generation of AI: ubiquitous, interactive intelligence that runs wherever you are. Today, not even the best models can continuously process and reason over a year-long stream of audio, video and text—1B text tokens, 10B audio tokens and 1T video tokens—let alone do this on-device.

We're pioneering the model architectures that will make this possible. Our founding team met as PhDs at the Stanford AI Lab, where they invented State Space Models or SSMs, a new primitive for training efficient, large-scale foundation models. Our team combines deep expertise in model innovation and systems engineering paired with a design-minded product engineering team to build and ship cutting edge models and experiences.

We're funded by leading investors like Index, Kleiner Perkins, and Lightspeed  along with Factory, Conviction, A Star, General Catalyst, SV Angel, Databricks and others. We're fortunate to have the support of many amazing advisors, and 90+ angels across many industries, including the world's foremost experts in AI.

About The Role

We are seeking an experienced and highly motivated Executive Assistant to support our Co-Founder & CEO. This role is ideal for someone who thrives in a fast-paced, high-growth startup environment and has prior experience supporting a founder/CEO. You’ll act as a true strategic partner—keeping the CEO organized, focused, and effective while enabling them to spend time on the highest-leverage priorities.

This is an in-person role based in our San Francisco office.

Key Responsibilities

• Executive Support & Prioritization

• Operations & Execution

• Cross-Functional Partnership

• Manage complex and rapidly evolving calendars, prioritizing with sound judgment.
• Anticipate needs, ensure the CEO is fully prepared for meetings, and act as a gatekeeper to optimize time and focus.
• Handle highly confidential information with discretion and professionalism.
• Coordinate and manage logistics for meetings, board sessions, investor updates, and offsites.
• Draft agendas, take notes, synthesize key discussions, and track follow-ups to ensure decisions turn into action.
• Own travel planning, itineraries, and expense management.
• Collaborate closely with leadership and teams across the company on strategic projects and initiatives.
• Act as an extension of the CEO in driving clarity, follow-through, and accountability across stakeholders.
• Build strong relationships internally and externally

Qualifications

• 4+ years of Executive Assistant experience supporting senior executives in a high-growth startup, with at least 2+ years directly supporting a Founder/CEO
• Exceptional organizational skills and attention to detail; able to manage competing priorities in a dynamic environment.
• Strong written and verbal communication skills with the ability to synthesize and simplify information.
• High EQ and judgment; able to balance urgency with diplomacy.
• Proficiency in Google Workspace (Calendar, Docs, Drive, Meet) and other productivity tools.
• A proactive, resourceful, and solutions-oriented mindset.
• Integrity, discretion, and professionalism in all interactions.
• Comfortable in a fast-paced, in-office startup environment.

Our Culture

🏢 We’re an in-person team based out of San Francisco. We love being in the office, hanging out together and learning from each other everyday.

🚢 We ship fast. All of our work is novel and cutting edge, and execution speed is paramount. We have a high bar, and we don’t sacrifice quality and design along the way.

🤝 We support each other. We have an open and inclusive culture that’s focused on giving everyone the resources they need to succeed.

Our Perks

🍽 Lunch, dinner and snacks at the office.

🏥 Fully covered medical, dental, and vision insurance for employees.

🏦 401(K).

✈️ Relocation and immigration support.

🦖 Your own personal Yoshi.